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Comparing Coro/Changes (file contents):
Revision 1.306 by root, Thu Dec 20 07:29:14 2007 UTC vs.
Revision 1.499 by root, Tue Jun 23 23:40:06 2009 UTC

1Revision history for Perl extension Coro. 1Revision history for Perl extension Coro.
2 2
3TODO: should explore PerlIO::via::CoroCede and PerlIO::via::CoroAIO. 3TODO: should explore PerlIO::coroaio (perl leaks like hell).
4TODO: maybe implement a default message channel, very much like Erlang 4TODO: maybe implement a default message channel, very much like Erlang's
5 (which is cool in a lot of important aspects (failures!), 5 actor model (which is cool in a lot of important aspects (failures!),
6 but very lacking in others (higher level ipc)). 6 but very lacking in others (higher level ipc)).
7TODO: unready_all
8TODO: myhttpd header parsing
9TODO: channel->maxsize(newsize)?
7 10
84.34 115.14 Wed Jun 24 01:37:48 CEST 2009
12 - provide explicit functions to "cede" to the event loop in Coro::AnyEvent,
13 as this seems to have been a difficult concept (poll, sleep, idle,
14 idle_upto).
15 - add Coro::AnyEvent::readable/writable functions.
16 - clarify Coro::EV/Event/AnyEvent manpages.
17 - free per-thread global scalars in the thread calling ->cancel, to
18 avoid crashes when $_, $@ etc., are magical but some of those
19 had already been freed.
20 - "unexperimentalise" the callback interface for Coro::Semaphore.
21 - speed up ready queue management/context switching by using a linked
22 list instead of an array (~5-10%).
23 - implement "watch" command in Coro::Debug shells.
24 - for fun, implement time-slicing as an example in the manpage.
25 - if AnyEvent detects EV or Event, but we don't have Coro::EV or
26 Coro::Event, use the normal AnyEvent handling instead of dieing
27 (the same is true for Coro::Handle).
28 - properly document Coro::EV::timed_io_once.
29 - avoid unneccessary ->cancel calls in Coro::Handle.
30 - maybe make it work on mingw32 with win32 backend
31 (based on patch by Yasuhiro Matsumoto).
32
335.132 Fri May 29 09:00:39 CEST 2009
34 - do not keep a reference to the argument itself in
35 Coro::Semaphore::guard, as it could change later.
36 - support SO_RCVBUF/SO_SNDBUF nonstandard Coro::Socket options,
37 should support a prepare callback.
38
395.131 Mon Mar 16 23:20:37 CET 2009
40 - implement and document Coro->suspend, Coro->resume.
41 - fix Coro::Select implementation to not (often) close
42 the passed file descriptors (testcase provided by pippijn).
43
445.13 Mon Dec 15 21:51:42 CET 2008
45 - EXPERIMENTAL: implement dynamic winds (on_enter/on_leave).
46 - don't set diehook to C<undef> but instead to NULL, to avoid
47 spurious warnings.
48 - fix a lot of bugs in Coro::SemaphoreSet.
49 - Coro::SemaphoreSet will less often create a semaphore needlessly.
50 - add Coro::SemaphoreSet::count and wait methods.
51 - take advantage of the new Guard module.
52 - deprecate Coro::guard.
53 - try to fix the dreaded 01_unblock tests once more. I hate it when
54 testsuites need more fixing than the code they are supposed to test.
55 - croak in more cases when a required callback isn't resolvable.
56 - fix some minor issues in Coro::State->call/eval.
57 - use current coroutine context instead of a temporary one
58 when temporarily switching to another coroutine.
59 - do not call C-level on_destroy handlers during global destruction,
60 to avoid needless segfaults.
61
625.12 Sun Dec 7 13:30:38 CET 2008
63 - add default config for MirOS, which seems to be a bug-to-bug
64 compatible fork of openbsd ("world domination by releasing
65 openbsd cvs before the openbsd folks do it" or so :).
66 - free_padlist did destroy the names pad, not good, but didn't
67 seem to bother perl - this could fix issues such as eval ""
68 inside a function called from multiple coroutines.
69 - use a different method to detect destruction time.
70 - be more careful when freeing padlists just before global
71 destruction.
72 - fixed and expanded the call/cc example.
73 - renamed _terminate to _coro_run.
74 - new method Coro::Channel->shutdown.
75 - try pthreads on openbsd <4.4 (broken sigaltstack, will
76 pthreads fare better?).
77 - be less picky about destroying "a" running coroutine.
78
795.11 Tue Nov 25 21:49:05 CET 2008
80 - DEBUGGING in 5.10.0 is a mess: it constantly flags perfectly
81 working code with failed assertions, introducing more bugs than
82 it fixes, requiring elaborate workarounds :(
83
845.1 Mon Nov 24 08:54:59 CET 2008
85 - wrote a small introductory tutorial - Coro::Intro.
86 - convert Coro::Timer, Coro::Select and Coro::Util to rouse API.
87 - Coro::Select did errornously dup the file descriptors
88 and didn't work with all AnyEvent backends.
89 - Coro::Select wasn't imported correctly form Coro::LWP, causing blocking
90 LWP data transfers.
91 - disassociate c contexts from coro objects - this is agruably more
92 correct, but mostly allows sharing of cctxs between coro and state
93 objects, for added memory savings and speed increases.
94 - bumped $Coro::POOL_RSS up to 32kb by default.
95 - no longer set the optype to OP_CUSTOM, as B::* understandably
96 doesn't like this very much (and we *are* a type of entersub).
97 - implement state cloning, just to prove that call/cc can be done.
98 - automatically load Coro::AnyEvent in Coro::Handle.
99 - wrap ->cancel calls in eval inside Coro::Handle as EV watchers
100 do not have this method (and don't need it either).
101 - speed up generic anyevent methods in Coro::Handle by using rouse
102 callbacks.
103 - allow coroutines in $Coro::IDLE, speeding up Coro::AnyEvent and
104 others. It also makes the debugger happier, as you can trace
105 through the idle threads now.
106 - add comppad_name* and hints ($^H, %^H) to per-thread variables.
107 - eg/event was pretty broken.
108 - better 5.8.6 compatibility.
109
1105.0 Thu Nov 20 10:35:05 CET 2008
111 - NEW ARCHITECTURE: use the latest 4.x version if you experience
112 stability issues.
113 - bump API version to 7 - all dependents must be recompiled.
114 - removed timed_* functions - they were not being used anyways
115 and should be replaced by a more generic mechanism -
116 and were annoying to support anyways :)
117 - removed SemaphoreSet's waiter method - use sem method instead.
118 - Coro::Semaphore->adjust didn't correctly wake up enough waiters.
119 - async_pool did free a scalar value twice
120 ("Attempt to unreference...").
121 - fix a longstanding bug where calling terminate on a coro that
122 was waiting for a semaphore that was just becoming available
123 would cause a deadlock (semaphore would get into a state where
124 it was available but waiters were still blocked).
125 - calling throw on a coroutine that is waiting for a semaphore will
126 no longer make it acquire the semaphore (and thus leak a count).
127 - perl's process emulation is now not even theoretically supported
128 anymore.
129 - new functions Coro::rouse_cb and Coro::rouse_wait for easier
130 conversion of callback-style to blocking-style.
131 - new methods $coro->schedule_to and ->cede_to, to specifically
132 schedule or cede to a specific coroutine.
133 - new function Coro::Semaphore::wait.
134 - use named constants in Coro::Channel (Richard Hundt).
135 - directly patch the entersub opcode calling SLF functions (cede,
136 transfer and so on). this does speed up context switching, but
137 more importanly, it frees us from the hardcoded behaviour of
138 entersub, so we might actually be able to return something from
139 those functions and atcually create new ones.
140 - take advantage of __builtin_frame_address on gcc.
141 - expose THX in coroapi (not sure whether this was a wise decision,
142 as "threaded" perls are running at half speed anyways).
143 - implement execute_slf (schedule-like-function) interface that makes
144 it possible to implement schedule-like-functions in XS.
145 - use new SLF interface to massively speed up Coro::EV by roughly a
146 factor of two.
147 - used new SLF interface to massively speed up Coro::Semaphore by a
148 factor of three.
149 - used new SLF interface to speed up Coro::AIO by roughly a factor of
150 four and reduce its memory usage considerably.
151 - implement Coro::SemaphoreSet purely in terms of Coro::Semaphore,
152 for a nice speedup and vastly more correct behaviour. Also implement
153 a new method "sem" to get at the underlying semaphore object.
154 - implement Coro::Channel in terms of Coro::Semaphore, for a moderate
155 (in comparison) 20-40% speedup.
156 - used new SLF interface to reimplement Coro::Signal gaining
157 some unknown (because I was too lazy), but certain, speedup, and also
158 making signals reliable for the first time.
159 - used new SLF interface and other optimisations to speed up async_pool
160 by a factor of two. It also doesn't rely on perl's exception mechanism
161 to exit anymore. The overhead for terminating an async_pool, coro over
162 a normal async is now very small.
163 - sped up coroutine creation/destruction by 40%.
164 - forgot to include Coro/libcoro/README in the dist for all these years.
165 - work around a freebsd pthreads bug (manual testcancel is required as
166 pthread_cond_wait isn't a cancellation point on freebsd).
167 - use new rouse functions to speed up and simplify Coro::BDB.
168 - make "prefer perl native functions" work with threaded perls.
169 - condense Coro::Debug ps output, hint at v and w flags.
170 - (libcoro) lots of minor cleanups and portability improvements.
171
1724.914 Wed Nov 19 12:54:18 CET 2008
173 - fix a disastrous bug in the readline optimisation
174 introduced in 4.801.
175
1764.913 Sat Nov 15 07:58:28 CET 2008
177 - async_pool did free a scalar value twice
178 ("Attempt to unreference...").
179
1804.912 Thu Nov 13 18:31:23 CET 2008
181 - minor cleanups.
182 - use much larger stacks on linux and perl < 5.8.8.
183 - Coro::Debug::new_unix_server did not unlink the socket
184 when destroyed.
185
1864.911 Tue Nov 11 04:26:17 CET 2008
187 - "port" to threaded perls.
188
1894.91 Mon Nov 10 05:36:38 CET 2008
190 - the ->throw exception object no longer leaks.
191 - creating a new cctx leaked a scopestack entry (memleak).
192 - new coroutines didn't get created with a zero flags field
193 (unknown impact).
194 - calling ->throw on a not-yet-started coroutine should now work
195 instead of being ignored.
196 - ->throw is now supported on Coro::State objects.
197 - clean up cctx creation code a bit.
198 - entersub is actually a UNOP, not a LOGOP (not a bugfix).
199
2004.9 Sat Nov 8 17:45:27 CET 2008
201 - (libcoro) did not preserve rbp with CORO_ASM (we are getting there).
202 - (libcoro) no longer leak threads in the experimental pthread backend,
203 also speed it up considerably.
204 - (libcoro) do not rely on makecontext passing void *'s unscathed.
205 - fix compiletime dependencies on libcoro in the Makefile.
206 - cctx_count wasn't always updated properly.
207 - Coro::State::cctx_stacksize wasn't applied correctly.
208 - new function Coro::State::cctx_max_idle.
209 - the default max number of idle C contexts is now 4.
210 - (libcoro) try harder to get _setjmp/_longjmp.
211 - (libcoro) cleanup and extend the libcoro API to officially
212 allow the creation of empty source contexts.
213 - very experimental workaround for the totally broken netbsd platform.
214 - tried to hack around openbsd bugs.
215
2164.804 Wed Nov 5 16:36:00 CET 2008
217 - Coro::Debug::new_unix_server would not create a non-blocking listening
218 socket, sometimes causing freezes.
219 - (libcoro) fix misaligned stack points for setjmp and assembly
220 methods, which can cause crashes on x86/x86_64 with a sufficiently
221 aggressive compiler.
222 - new function: Coro::Debug::new_tcp_server.
223 - move ->throw into the Coro class because it only works on coro objects.
224
2254.803 Mon Nov 3 17:16:12 CET 2008
226 - (libcoro) use a global asm statement to become independent of gcc
227 otpimisations for CORO_ASM (thanks to pippijn for the idea).
228 - try to workaround yet another broken bsd, this time dragonfly.
229
2304.802 Thu Oct 30 10:56:12 CET 2008
231 - support -fno-omit-frame-pointer on x86 with the assembly method.
232 - tune 01_unblock.t tests a bit.
233
2344.801 Wed Oct 22 18:33:37 CEST 2008
235 - improve readline speed for very long "lines".
236 - backport to 5.8.8.
237
2384.8 Thu Oct 2 13:34:40 CEST 2008
239 - new function Coro::AIO::aio_wait.
240 - Coro.:AIO and Coro::BDB now "use Coro::AnyEvent".
241 - greatly speed up and reduce memory usage of Coro::AIO requests.
242 - implement some other µ-optimisations.
243
2444.749 Mon Sep 29 14:40:12 CEST 2008
245 - port to slow and broken pseudo-threaded perls. (courtesy pippijn).
246
2474.748 Sat Sep 27 14:03:19 CEST 2008
248 - implement, but do not document, PerlIO::cede(granularity).
249 - Coro::Storable forgot to wrap Storable::pstore.
250 - work around the multitude of leaks and memory corruption
251 bugs in PerlIO::via by using our own C-level perliol. As a side
252 effect, Coro::Storable is now much, much, much faster.
253
2544.747 Tue Sep 23 01:59:41 CEST 2008
255 - fix a per-cv memleak (one empty array was leaked per
256 code reference).
257 - avoid a crash in coro->call|rss when the coroutine was already
258 destroyed (most noticably when using Coro::Debug::ps :)
259 - also protect *Storable::FILE.
260 - push up default storable granularity to 20ms.
261
2624.746 Sun Sep 21 03:22:20 CEST 2008
263 - be more insistent on locking Storable against reentrancy
264 in Coro::Storable.
265 - move swap_def?v and throw to Coro::State, as documented.
266
2674.745 Thu Jul 24 00:14:38 CEST 2008
268 - remove debugging code related to MgPV_nolen_const, also try to
269 make it compile with perl 5.8.6 (yes, apple apparently loves
270 outdated software). Reported by John S.
271
2724.744 Tue Jul 8 22:06:35 CEST 2008
273 - correctly provide default DIE/WARN handlers as documented.
274 - also overwrite PL_vtbl_sigelem.svt_clear, even though current
275 implementations inside perl work fine for us.
276
2774.743 Mon Jun 16 00:21:57 CEST 2008
278 - when using Coro::EV without running EV::loop it could
279 result in busy-waiting for events, this has been fixed.
280 - reduce codesize and improve performance by using EV_DEFAULT_UC.
281
2824.742 Sat May 31 14:10:21 CEST 2008
283 - implement a workaround for (some) perl <5.8.8 versions.
284 - require EV 3.3+.
285
2864.741 Fri May 30 23:33:09 CEST 2008
287 - tell netbsd how utterly broken their imitation of an OS is
288 and refuse to build by default if pthreads are in use.
289 - switch to "s" method on all bsd's by default, as their ucontext
290 stuff seems just too broken.
291 - fix a bug in Coro::Select.
292
2934.74 Thu May 29 20:05:31 CEST 2008
294 - do not test Coro::LWP for lack of dependencies.
295 - do not test Coro::Select for lack of working perls.
296
2974.73 Thu May 29 2008
298 - fix a bug in Coro::EV which would cause it to block despite
299 there being runnable coroutines.
300 - sprinkle "no warnings" freely over everything, also suppress
301 warnings for some other modules.
302 - fix typo in WSAEWOULDBLOCK.
303
3044.72 Sun May 25 05:14:36 CEST 2008
305 - tweak META.yaml a bit, unfortunately, there is no documented way
306 to have optional dependencies with CPAN. doh :(
307 - avoid running some tests on windows because they would fail due to
308 perl bug (broken fork, broken pipes...).
309 - work around perl on windows bugs where perl returns undocumented
310 error codes for sysread, syswrite etc. by taking advantage
311 of AnyEvent's workaround for that problem.
312 - use AnyEvent::Util::fh_nonblocking in Coro::Handle to work around
313 a common perl implementation bug on windows.
314 - use unix domain sockets in testsuite to work around
315 common perl implementation bugs on widows (they are emulated by
316 tcp sockets on windows. ugh.)
317
3184.71 Sat May 24 20:01:27 CEST 2008
319 - fix a bug in Coro::AnyEvent ("Usage: Coro::AnyEvent::_schedule()").
320 - take advantage of async name resolution of AnyEvent::Util.
321 - work around brutal inet_aton override in Coro::LWP.
322 - take advantage of the readyhook in Coro::EV, for smoother
323 scheduling.
324
3254.7 Sun May 11 00:32:19 CEST 2008
326 - completely reworked the Coro manpage.
327 - added Coro::AnyEvent, generic event loop integration.
328 - implement cancel, ready and kill commands in Coro::Debug.
329 - document find_coro in Coro::Debug.
330 - incompatible change: rename has_stack to has_cctx.
331 - Coro::AIO and Coro::BDB no longer force event model detection,
332 use AnyEvent::AIO and AnyEvent::BDB.
333
3344.6 Sat Apr 26 10:05:14 CEST 2008
335 - INCOMPATIBLE CHANGE: sub/code attributes are no longer supported
336 by the Coro module. It was a mistake to have it in the first place.
337 - (experimental) support for activestate perl 5.10 (method "w").
338 - (experimental) support for strawberry perl (method "a").
339 - coro_sigelem_set did not return a value although it had to,
340 actual impact unknown.
341
3424.51 Mon Apr 14 13:28:27 CEST 2008
343 - make it compile again on 5.8.
344
3454.50 Thu Apr 10 09:43:17 CEST 2008
346 - I did it twice! (see 4.49).
347
3484.49 Sun Apr 6 21:23:31 CEST 2008
349 - grr, instead of compiling the recent changes on 5.10 only they
350 were compiled on 5.8 only.
351
3524.48 Sun Apr 6 20:36:46 CEST 2008
353 - allow coroutine switches during eval's under 5.10.x, as it seems
354 the parser is a per-interpreter option now, so this is safe
355 (this might fix the odd crashing bug).
356 - drop support for 5.9.x versions: they are dead, jim.
357
3584.47 Sun Apr 6 00:37:52 CEST 2008
359 - force cctx allocation on API calls: we know we need to force one
360 and gcc actually manages to confuse our heuristic nowadays,
361 leading to crashes and worse.
362 - document force_cctx.
363
3644.46 Fri Apr 4 22:05:43 CEST 2008
365 - upgrade libcoro, resulting in pthread-backend (which was only created
366 to fulfill the rules of the programming languages shootout).
367
3684.45 Thu Mar 13 11:55:36 CET 2008
369 - fix a file leaking bug in eg/mhyttpd that would allow
370 downloading of any file (reported by oesi).
371 - fix deadlock bug in Coro::Channel (reported by Richard Hundt)
372 (also add testcase).
373 - support Broadcast option in Coro::Socket (patch by Richard Hundt,
374 apparently having loads of fun with that).
375 - implement $state->swap_defsv, ->swap_defav and document ->throw.
376
3774.4 Wed Feb 13 16:44:29 CET 2008
378 - only assume .cfi pseudo isns exist on GNU/Linux.
379 - add get_timed method to Coro::Channels.
380 - fixed Coro::Debug manpage.
381 - perl 5.11 compatbility improvement based on patch by
382 Andreas König.
383
3844.37 Sun Jan 20 11:25:23 CET 2008
385 - soften the check for an active parser for perl 5.10 (avoiding
386 "Coro::State::transfer called while parsing" in many cases).
387
3884.36 Sun Jan 13 10:53:56 CET 2008
389 - reset diehook when terminating from an async_pool as to not
390 trigger any __DIE__ handlers.
391
3924.35 Sun Jan 13 04:14:13 CET 2008
393 - "bt" debug command now displays any exceptions
394 from longmess and also skips the innermost
395 stackframes, giving more useufl output.
396 - allow backtraces in coroutines blocked in Coro::EV,
397 at a <1% speed hit.
398 - handle localising of $SIG{__WARN__} and __DIE__
399 properly (with a proper amount of dirty hacking).
400
4014.34 Sat Dec 22 17:49:53 CET 2007
9 - upgrade to EV version 2.0 API. 402 - upgrade to EV version 2.0 API.
10 403
114.33 Mon Dec 17 08:36:12 CET 2007 4044.33 Mon Dec 17 08:36:12 CET 2007
12 - make Coro::AIO etc. loadable in the absence of EV. 405 - make Coro::AIO etc. loadable in the absence of EV.
13 406

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